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A135070 as a simple table

n a(n)
2 1
3 3
4 18
5 70
6 600
7 4956
8 52528
9 358128
10 6654600
11 79967800
12 1453049400
13 16239408120
14 392541718660
15 5252687631660
16 108961629396480
17 1395025456201408
18 62831427044385384
19 1223872353413404344

[1,3,18,70,600,4956,52528,358128,6654600,79967800,
 1453049400,16239408120,392541718660,5252687631660,
 108961629396480,1395025456201408,
 62831427044385384,1223872353413404344]

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Last modified September 4 02:28 EDT 2024. Contains 375679 sequences. (Running on oeis4.)